diff --git a/src/context.c b/src/context.c
index 99d7489f..f8b80085 100644
--- a/src/context.c
+++ b/src/context.c
@@ -599,7 +599,7 @@ GLFWAPI int glfwExtensionSupported(const char* extension)
         return GL_FALSE;
     }
 
-    if (!extension || *extension == '\0')
+    if (*extension == '\0')
     {
         _glfwInputError(GLFW_INVALID_VALUE, NULL);
         return GL_FALSE;